What is a government-owned corporation?

Section 2(13) of the Introductory Provisions of the Administrative Code of 1987 defines a government-owned or controlled corporation as follows:
SEC. 2. General Terms Defined. - x x x

(13) Government-owned or controlled corporation refers to any agency organized as a stock or non-stock corporation, vested with functions relating to public needs whether governmental or proprietary in nature, and owned by the Government directly or through its instrumentalities either wholly, or, where applicable as in the case of stock corporations, to the extent of at least fifty-one (51) percent of its capital stock: x x x.